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https://drivepatents.com/patents/1395298 · 13 May 2026
The present invention relates to a device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle, and to completing a jelly roll in which flags are not overlapped by clearly removing particles generat...
https://drivepatents.com/patents/1386909 · 10 Dec 2025
A secondary battery electrode film and separator supply device, in which an electrode separator (32) is wound on a bobbin (31) and an adhesive sticker (33) for fixing an end (37) of the separator (32) is bonded to a center of the end (37) of the separator ...